I need help - I can help - Append Pages from unsecured to secured pdf

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Append Pages from unsecured to secured pdf

Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=1950
Printed Date: 02 May 24 at 9:42AM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com

Topic: Append Pages from unsecured to secured pdf

Posted By: amitsri
Subject: Append Pages from unsecured to secured pdf
Date Posted: 12 Sep 11 at 6:19AM

Hi,

I need to append pages from one unsecured PDF to another secured PDF and want to keep all the source secured PDF's restrictions with password as it is. Please suggest me any sample code to achieve the goal. In addition, i have only open password to read the secured PDF. For further explanation, see below.

Source1 + Source2 = New

Secured PDF + Unsecured PDF = New Secured PDF with all the Secured PDF Open and Restrictions.

Thanks

Replies:

Posted By: Rowan
Date Posted: 12 Sep 11 at 7:10AM

You will want to use these two functions:

GetEncryptionFingerprint

http://www.quickpdflibrary.com/help/quickpdf/GetEncryptionFingerprint.php - http://www.quickpdflibrary.com/help/quickpdf/GetEncryptionFingerprint.php

EncryptWithFingerprint

http://www.quickpdflibrary.com/help/quickpdf/EncryptWithFingerprint.php - http://www.quickpdflibrary.com/help/quickpdf/EncryptWithFingerprint.php

So basically the steps are:

1. Load secured PDF

2. Get encryption details using GetEncryptionFingerprint

3. Decrypt secured PDF

4. Merge PDFs

5. Apply old security onto new merged PDF using EncryptWithFingerprint

6. Save to disk

Posted By: amitsri
Date Posted: 12 Sep 11 at 7:11AM

Thanks, I'll try and let you know soon.

Posted By: amitsri
Date Posted: 12 Sep 11 at 7:35AM

Hi,

I have tried as you suggested, function GetEncryptionFingerprint() returns Nothing in VB.Net. FYI, i am using Quick PDF Library 7.21. My Code steps are as followings:

Step 1: SetAdvancePassword(<open password>)
Step 2: LoadFromFile(<Filepath>)
Step 3: GetEncryptionFingerprint()

As per the SetAdvancePassword(), If the password is correct, the file will be automatically decrypted.

Thanks,

Posted By: amitsri
Date Posted: 12 Sep 11 at 7:51AM

Hi,

I got the encrypt finger print using following steps :

Step 1: LoadFromFile(<FilePath>)
Step 2: SetPassword(<openpassword>)
Step 3: GetEncryptionFingerprint()

I think, using SetAdvancePassword() is preventing to get the encrypt finger print.

Thanks

Posted By: amitsri
Date Posted: 12 Sep 11 at 10:02AM

Thanks for the suggestions, I have successfully merged two documents as needed.